Michael called from Microsoft, India branch! I have unknowingly downloaded a malicious virus via my email, he passed me to Jake who was a Microsoft Technical expert.
Jake reassured me everything was going to be OK and told me to look for the CTRL key on my lap top, then press the key with the 4 coloured windows flag on it.
I couldn't find it so he suggested a different location, after stringing him on for 5 mins I explained that I only use Macs, have done for nearly 15 years and that the only malicious scammer was him, he hung up
Be careful

An Asian bloke named "KEVIN" saying he was from BT and that my internet was going to be terminated. I said I was not with BT and did he know my name and address. He gave a random name and got flustered. I was polite and said "Okay, thanks for your call, disconnect me then" I could here him getting nasty as I hung up. Its a "PAY TO KEEP YOUR INTERNET ACTIVE" scam. Why is the world full of crooks?

Soo strange. This number called me today also (5/18/2016). It was a very very slow robotic sounding female voice, very hard to understand, essentially saying that they are with the IRS and you have to call them immediately and that it is a 'time sensitive' matter. So, the funny part is they called FROM 4153014726, but the number the recording tells you to call back is 4152014726. That number just goes nowhere for me.